Stone crusher



E. J. LEAP STONE CRUSHER June 14, 1932.

2 Sheets-Sheet 2 Filed April 2.. 1931 amnion Patented June 14, 1932 EARL J'. LEAP, OF MADLEY, PENNSYLVANIA STONE CRUSHEB Application filed April 2,

This invention relates to a machine adapted to crush stone or similar material and it aims to provide a construction which may be operated at exceedingly low cost and in which the material is squeezed rather than rubbed in order to effect the crushing.

It is also aimed to provide a novel con struction which is exceedingly compact, adjustable according to the degree of crushing desired and a construction which provides minimum moving joints.

The more specific objects and advantages will become apparent from a consideration of the description following taken in connection with accompanying drawings illustrating an operative embodiment.

In said drawings Figure l is a view of the crusher in central vertical section,

Figure 2 is a sectional view taken on the line 22 of Figure 1,

Figure 3 is a sectional view taken on the line 33 of Figure 1,

Figure 4 is a sectional line H of Figure 1, and

Figure 5 is a sectional detail of the bearings for the drive shaft and eccentric.

Referring specifically to the drawings, 10 generally designates a boxing which is open at the top to receive the material to be crushed and open at the bottom for discharge thereof. Such boxing is generally of rectangular form and exceedingly sturdy and solid.

A movable or crushing jaw is employed at 11 which is in the form of a lever pivoted on a cross shaft 12 mounted in suitable ar bors or plates 13 removably bolted or otherwise secured to the boxing. The openings 12 in arbors 13 which mount said shaft 13, are eccentric. Since the arbors are removable, they may be reversed so that the openings 12 may be arranged closer to the rear of the machine than to the front. In this way, the extent of the mouth of the crusher may be regulated. To secure the regulation, the arbors are removed, and then turned end for end. The particular adjustment which results from the construction shown, by the shifting of the shaft 12 from the position view taken on the 1931. Serial No. 527,259.

shown in Figure 1 to the other position, results-1n opening up the mouth of the crusher double the extent shown; I The jaw 11 carries a wear plate 14 of hardened metal, at its crushing surface between which and a stationary wearplate 15, also of hardened metal,

the

material to be crushed, is received.

The

material-receiving space is closed at the sides by cheeks or plates 16, of material similar to the parts 14 and 15.

The jaw 11 is thickened at the lower end and atthe rear -hardened metal, between flanges thereof carries a bar 17 of removably secured in place 18' by any suitable number roller bearing or other ment' as at 23 with the ator has a plurality of around'thesame in any anti-friction engage actuator.

1 Such actugrooves or slots 24 one of which'a contact-bar 25 may be fastened by anysuitabl'e number of bolts 26 passing through openings 27 therein.

Attention is. called to the fact that. the base of each groove 2 1 is at a.

. difierent distance from'the-axis of the eccentric21 and hence in the contact bar 25 is secured indifferent grooves or s'lots24, it will project different distances beyond the exterior of the actuator and thus will operate thejaw 11 to different extents, according to the The bolts l9-an'd 26 are fineness or degree of crushing desired for the material. 7 applied loosely in the openings in the jaw 11 and'actuator member 20'. Such jaw and away to provide recesses pair of nuts 19 and 26" members are cut accommodating a on the bolts 19 and 26, respectively. 1 As a result of this construction, one of the nuts 19 and26 will serve to secure the bolts 19 and.26, respectively in locked position while the:

serve as a lock therefor.

coacting. nut will The shaft 22 may have a fiy-wheel 28 thereon and it may be source of driven from any suitable power applied to a pulley, by way of example, as shown at 29.

A relatively strong contractile spring 30 is connected at 31 to the to a portion of the boxing.

jaw 11 and at 32 As a result of the construction described, the rock disposed between the plates 14 and 15 will be crushed since the eccentric 21 moves the actuator 20 toward and away from the jaw 11, and since the latter is urged in one direction by the coil spring 30 and moved in direction against the tensign of the 25 preferably has a rounded nose at 33 which is engaged in a socket 34 of the bar 17.

Various changes may be resorted to provided they fall within the spirit and scope of the invention.

I claim as my invention 2- 1. In acrusher, a jaw movable to crush material, an actuator for said jaw, a shaft having an eccentric operable through the actuator to move the latter to cause movement of the jaw, a contractile spring urging movement of the jaw counter to said actuator, said actuator being rotatable on the eccentric for adjustment thereof and having means controlled by the adjustment for moving the jaw to different extents to govern the degree of crushing.

2. In a crusher, a jaw movable to crush material, an actuator for said jaw, a shaft having an eccentric operable through the actuator to move the latter to cause movement of the jaw, a contractile spring urging movement of the jaw counter to said actuator, said actuator having a plurality of slots about the same of different depths, a contact bar applicable selectively to said slots and adapted for engagement with the jaw, said actuator being rotatable about said eccentric to operatively position the slots.

3. In a crusher, a jaw movable to crush material, means to actuate the jaw, a shaft pivotally mounting the jaw, arbors having openings providing bearings for saidshaft, said arbors being removable and reversible, and the openings of said arbors for said shaft being closer to one end than to the other.

4. In a crusher, a jaw movable to crush'material, actuating means for said jaw, a shaft pivotally mounting the jaw, a, pair of relatively oblong arbors having openings for removably mounting said shaft, said arbors being removable and reversible end for end,

and the openings of said arbors mounting said shaft being located closer to one end of each arbor than to the other, to enable adjustment of the mouth of the jaw according to the position of the arbors.

In testimony whereof I affix my signature.

EARL J LEAP. 

